BOSTON (AP) -- Gov. Deval Patrick is apologizing to state residents who have struggled to sign up for health coverage because of a problem-plagued state website.

The governor on Thursday outlined a series of corrective actions and said his administration may ask the federal government for an extension of a March 31 deadline to fully transition from the state’s landmark health care law to the federal health care law.

The state has hired Sarah Iselin (IHZ’-lehn), an executive of Blue Cross Blue Shield of Massachusetts, and contracted with the firm Optum to lead efforts to fix the glitchy website.

The state will not immediately cut ties with CGI, the prime vendor for the website, but Patrick says the state will not make additional payments to the company until the website is functioning.